Robust Password-keeping System Using Block-chain Technology

Most of the cyber information systems require users to provide identity information as a way of authentication and usually the identity information is a pair of user name and password. With so many information systems to access, people need to memorize hundreds of user names and passwords. As a result, they often forget their user names or passwords and have to go through a time-consuming and troublesome procedure to find them back. In this article, we propose a solution storing people's user names and passwords using block-chain in an encrypted format. When the user name or password for a particular website is lost, they can be accessible through the block chain. As a result, people do not need to memorize their user names and passwords for different websites any more. The password stored in the block-chain would not be compromised to any cyber-attacks because block-chain is immutable.